Message Layout

The user can control how arrowed messages on the isometric are positioned on the isometric using the MESSAGEACCURACY command.

The MESSAGEACCURACY RADIAL option determines the accuracy level of the radial search, based on the number of radial directions searched away from the arrowhead, the number of additional directions for kinked lines, and the length of increments of leader lines. The levels are as follows:

Once all messages have been positioned, the MESSAGEACCURACY ITERATIONS option repositions any messages with crossing leader lines, and all messages with leader lines passing through the text block. The user can set a maximum number of iterations, and the process is repeated until one of the following conditions is satisfied:

• No leader lines cross and no messages need to be moved.

• The number of leader lines crossing and messages moving is the same as the previous iteration.

• The maximum number of iterations set by the option is reached.

The user should start with accuracy level 1. Higher accuracy levels are achieved at the expense of performance. Increasing the number of iterations is not as expensive as higher accuracy levels, as often an equilibrium is reached before the maximum number of iterations. Thus it is recommended that the effect of increasing iterations be examined before increasing the accuracy level.